From the HUB:
Sunday, Jan. 15 – Friday, Jan. 20
Turnstiles open at 8:30 a.m. Guests can enjoy Toy Story Mania!, Rock ‘n’ Roller Coaster Starring Aerosmith, and The Twilight Zone Tower of Terror.
All other attractions (including Star Tours: The Adventures Continue) will open at 8:45 a.m..
Signups for Jedi Training Academy will begin at 8:30 a.m. at the ABC Sound Studio
FASTPASS distribution will be available at Star Tours: The Adventures Continue beginning at 8:30 a.m. Any Guests who choose to wait for Star Tours: The Adventures Continue will be welcome to wait in the exterior queue at the attraction.
No word if it will continue after the 20th.

What I'm hearing is a new test will begin after the 20th where rope drop will still be half an hour early, but only certain attractions will open then, such as Toy Story. The ones that don't open will not open until the scheduled park opening time.